Rep. Michael McCaulof Texas, one of the GOP's most prominent foreign affairs hawks, announced he'd retire on Sunday while warning that, with Russia's escalation of its invasion of Ukraine , “we got to be very careful not to be on the precipice of a World War III.”

McCaul made his statements to ABC News as he discussed last week's incursion into Polish airspace of Russian drones, which led to NATO scrambling jets to intercept the vehicles. Russia said the intrusion was an error, but Poland and other European countries contended it was intentional. President Donald Trump said it “could have been a mistake.”

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McCaul said the move was cause for alarm. “We’ve never seen anything like this in recent times,” the congressman said. “And so, what I’m concerned about is that

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